Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A kind of gauge for measuring the exhaustion (creation of a vacuum) of an air pump receiver (airtight vessel from which air is pumped in order to form a vacuum).
Definition source: English Wiktionary via Wiktextract
Usage: historical
Topics: natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
So called by its inventor, John Smeaton, in the mid-18th century, because it consisted in part of a pear-shaped glass vessel.
